[Pkg-utopia-maintainers] Bug#779931: Bug#779931: "sk_disk_check_sleep_mode: Operation not supported" for USB3 HDD docking based on JMicron 152d:0551

[Michael Biebl]

Am 06.03.2015 um 15:30 schrieb Gianluca Oglietti:
> Package: libatasmart4
> Version: 0.19-3
> Severity: grave
> Justification: causes non-serious data loss
> 
> Dear Maintainer,
> 
> I bought a new HDD docking station (for 2 HDDs) based on JMicron JMB551 chipset
> but I discover an issue that could cause data loss.
> 
> If I mount some partitions of 2 HDDs connected to my laptop via USB 3.0 using
> this docking station all works fine until the JMBB551 go in "sleep mode". This
> kind of docking station, in fact, have an "intelligent sleep function" that put
> the HDDs in sleep mode when there aren't R/W data operations for at least 5
> minutes.
> 
> Every 10 minutes udisksd control the state of SMART attributes of the attached
> HDDs but when the docking is in "sleep mode" we notice the error
> "sk_disk_check_sleep_mode: Operation not supported" and the USB connection to
> the docking is resetted as you can see in the next udisksd log:

If checking the SMART state of the sleeping disk resets the USB
connection, then this sounds like a kernel bug.


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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